存活素仅表达于各种皮肤良恶性病变，而不表达于正常皮肤。

Survivin is selectively expressed in various kinds of benign and malignant skin lesions, but not in normal skin.

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但是，仅根据CEUS增强模式所反映的血流灌注情况，对鉴别息肉样病变良、恶性的价值有限。

However, CEUS is most useful in reflecting blood perfusion patterns; it had limited value in differentiating the malignancies of polypoid lesions.

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But, he says, if he tries to persuade people of the goodness and the justice of his way of life on simply rational grounds alone, to persuade them that the examined life alone is worth living, he says he will not be believed.

但他表示，假设他试图说服,良善及正直之士,相信其生活方式的作法,仅在简单的理性基础上，或者试图说服他们,经反省的生命才值得活，他说他们也仍然不会相信他。

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